topic RE: PDF to JPG/PNG convert with Blue Prism in Product Forum

PDF to JPG/PNG convert with Blue Prism

Tejaskumar_Darji — Tue, 07 Jun 2022 14:37:00 GMT

Hello team,

Do we have any VBO available to convert PDF to Image formats(JPG/PNG)?

Or any DLL with code stage that you are aware of to perform this file conversion.

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If I was of assistance, please vote for it to be the "Best Answer".

Thanks & Regards,
Tejaskumar Darji
Sr. Consultant-Technical Lead
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RE: PDF to JPG/PNG convert with Blue Prism

vinodchinthakin — Wed, 08 Jun 2022 05:37:00 GMT

Hi @Tejaskumar_Darji.

1. You can have a look on some below threads

https://community.blueprism.com/communities/community-home/digestviewer/viewthread?GroupId=145&MessageKey=f3bfb9bd-2bdb-44db-9992-9700031678fd&CommunityKey=3743dbaa-6766-4a4d-b7ed-9a98b6b1dd01&tab=digestviewer

https://www.rpaforum.net/threads/pdf-to-image-convert.13244/

2. or just automate open source web tools for conversion like
https://www.ilovepdf.com/pdf_to_jpg

3. or use open source API's like
https://www.convertapi.com/pdf-to-jpg#snippet=csharp

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vinod chinthakindi
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RE: PDF to JPG/PNG convert with Blue Prism

ewilson — Wed, 08 Jun 2022 19:12:00 GMT

@Tejaskumar_Darji,

I don't believe there are any assets on the DX that support this feature, but there is an open source library available on GitHub and Nuget called PDFiumSharp that could be used for this. There are even some examples in the GitHub project that show how to load a PDF and then convert it to what they call a PDFiumBitmap, which is really just a regular old BMP. You could create a regular .NET Bitmap instance from that PDFiumBitmap and then use the Save action and ImageFormat enum to save it as a PNG or JPEG.

https://github.com/ArgusMagnus/PDFiumSharp

Cheers,

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Eric Wilson
Director, Integrations and Enablement
Blue Prism Digital Exchange
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Re: RE: PDF to JPG/PNG convert with Blue Prism

sumire — Thu, 20 Jun 2024 00:23:20 GMT

Hello @ewilson ,

Please tell me more about PDFiumSharp.
The steps I tried are below:

Download ZIP from Github
Place the DLL in the same folder as Automate.exe
Create VBO and write code stage

However, when I set the DLL in the VBO code option, a lot of errors occur and I cannot continue working.

Please let me know what is missing in my steps.

Re: RE: PDF to JPG/PNG convert with Blue Prism

ewilson — Thu, 20 Jun 2024 14:24:26 GMT

@sumire which DLLs did you place in the Automate folder? Can you provide the exact names?

Cheers,

Eric

Re: RE: PDF to JPG/PNG convert with Blue Prism

sumire — Thu, 20 Jun 2024 23:52:14 GMT

@ewilson
pdfium_x86.dll and pdfium_x64.dll
These 2 items were included in pdfium.windows.1.0.0.nupkg.
I opened it with NuGet Package Explorer and got the 2 DLLs inside.
https://www.nuget.org/packages/PDFium.Windows/

Re: RE: PDF to JPG/PNG convert with Blue Prism

ewilson — Fri, 21 Jun 2024 12:04:17 GMT

@sumire

Which version of Blue Prism are you using? There are additional DLLs that the Pdfium DLLs rely on, so my guess is you're missing something there.

Cheers,

Eric

Re: RE: PDF to JPG/PNG convert with Blue Prism

sumire — Sun, 23 Jun 2024 23:52:49 GMT

6.10.5 and 7.1.1.
I've tried both version, and it doesn't work.

Re: PDF to JPG/PNG convert with Blue Prism

Tony011 — Mon, 08 Jul 2024 07:17:39 GMT

You can use an online tool like pdftopng to convert your PDF, and the output is excellent.

Re: PDF to JPG/PNG convert with Blue Prism

sumire — Mon, 08 Jul 2024 07:39:59 GMT

Hello @Tony011 ,

Thanks for the suggestion.
I know a lot of online tools, I also know that their performance is excellent.
However, there are times in my business when I cannot use online tools (e.g. in a closed environment) , so I need a VBO.

Re: PDF to JPG/PNG convert with Blue Prism

ewilson — Wed, 10 Jul 2024 15:06:53 GMT

@sumire in my testing, on v7.3 64-bit Blue Prism, I had to copy the following files into my Automate folder to get PDFium working from Code stages:

pdfium_x64.dll
pdfium_x86.dll
PDFiumSharp.dll
System.ValueTuple.dll (this is a Microsoft DLL not included in the standard BP installation)

And I set up my Global Code Options like this:

I've created a VBO wrapper for PDFiumSharp which will be posted to the DX in the next week or two, but it may end up being a paid asset (depends on what those above me decide).

Cheers,
Eric

Re: PDF to JPG/PNG convert with Blue Prism

sumire — Thu, 11 Jul 2024 02:36:42 GMT

Hello @ewilson ,

Thank you for your efforts.
I understand that "system.valuetuple.dll" is included in .NET4.7 and above.
Blue Prism's minimum installation requirement is 4.7, so is it contradictory to say "System.ValueTuple.dll (this is a Microsoft DLL not included in the standard BP installation)"?

Re: PDF to JPG/PNG convert with Blue Prism

ewilson — Thu, 11 Jul 2024 13:16:39 GMT

Hi @sumire,

I don't think it's contradictory because I'm on .NET 4.8 and still had to add the DLL to my Automate folder for PDFium to be happy. It should be picked up if it's in the GAC, but in my tests, it didn't seem to work as expected.

So, you can try without adding it and see if PDFium works for you. If you receive a Code stage error when you call a PDFium action, then you might try adding it.

Cheers,
Eric

Re: PDF to JPG/PNG convert with Blue Prism

sumire — Fri, 12 Jul 2024 14:40:24 GMT

Hello @ewilson ,

Thank you for providing information.
Now I understand that "system.valuetuple.dll" is located somewhere else on my PC, and needs to be copied to the BluePrism execution folder.
Thanks to you, I was able to write the code stage myself and create an action to convert from PDF to image.
The screenshot you provided of the global code options was very helpful.

I learned a lot. Thank you again.